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Observation of the electromagnetic Dalitz transition hc →e+e-ηc. / The BESIII Collaboration ; Мучной, Николай Юрьевич; Николаев, Иван Борисович.

в: Physical Review D, Том 110, № 11, 112009, 11.12.2024.

Результаты исследований: Научные публикации в периодических изданияхстатьяРецензирование

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The BESIII Collaboration, Мучной НЮ, Николаев ИБ. Observation of the electromagnetic Dalitz transition hc →e+e-ηc. Physical Review D. 2024 дек. 11;110(11):112009. doi: 10.1103/PhysRevD.110.L111101

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@article{1aa9bfc9f08e4ecf9fad735cb7b3e43f,
title = "Observation of the electromagnetic Dalitz transition hc →e+e-ηc",
abstract = "By analyzing (27.12±0.14)×108 ψ(3686) events collected with the BESIII detector operating at the BEPCII collider, the decays χcJ→pp¯KS0K-π++c.c. (J=0,1,2) are observed for the first time with statistical significances greater than 10σ. The branching fractions of these decays are determined to be B(χc0→pp¯KS0K-π++c.c.)=(2.61±0.27±0.32)×10-5, B(χc1→pp¯KS0K-π++c.c.)=(4.16±0.24±0.46)×10-5, and B(χc2→pp¯KS0K-π++c.c.)=(5.63±0.28±0.46)×10-5, respectively. The processes χc1,2→p¯Λ(1520)KS0π++c.c. are also observed, with statistical significances of 5.7σ and 7.0σ, respectively. Evidence for χc0→p¯Λ(1520)KS0π++c.c. is found with statistical significances of 3.3σ. The corresponding branching fractions are determined to be B(χc0→p¯Λ(1520)KS0π++c.c.)=(1.61-0.64+0.68±0.23)×10-5, B(χc1→p¯Λ(1520)KS0π++c.c.)=(4.06-0.76+0.80±0.52)×10-5, and B(χc2→p¯Λ(1520)KS0π++c.c.)=(4.09-0.84+0.87±0.42)×10-5. Here, the first uncertainties are statistical and the second ones are systematic.",
author = "{BESIII Collaboration} and M. Ablikim and M. n. Achasov and P. Adlarson and S. Ahmed and M. Albrecht and R. Aliberti and A. Amoroso and M. r. An and Q. An and X. h. Bai and Y. Bai and O. Bakina and Ferroli, {R. baldini} and I. Balossino and Y. Ban and K. Begzsuren and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and J. Bloms and A. Bortone and R. a. Briere and H. Cai and X. Cai and A. Calcaterra and G. f. Cao and N. Cao and S. a. Cetin and J. f. Chang and W. l. Chang and G. Chelkov and D. y. Chen and H. s. Chen and Мучной, {Николай Юрьевич} and Николаев, {Иван Борисович}",
year = "2024",
month = dec,
day = "11",
doi = "10.1103/PhysRevD.110.L111101",
language = "English",
volume = "110",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "AMER PHYSICAL SOC",
number = "11",

}

RIS

TY - JOUR

T1 - Observation of the electromagnetic Dalitz transition hc →e+e-ηc

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Aliberti, R.

AU - Amoroso, A.

AU - An, M. r.

AU - An, Q.

AU - Bai, X. h.

AU - Bai, Y.

AU - Bakina, O.

AU - Ferroli, R. baldini

AU - Balossino, I.

AU - Ban, Y.

AU - Begzsuren, K.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Bloms, J.

AU - Bortone, A.

AU - Briere, R. a.

AU - Cai, H.

AU - Cai, X.

AU - Calcaterra, A.

AU - Cao, G. f.

AU - Cao, N.

AU - Cetin, S. a.

AU - Chang, J. f.

AU - Chang, W. l.

AU - Chelkov, G.

AU - Chen, D. y.

AU - Chen, H. s.

AU - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

PY - 2024/12/11

Y1 - 2024/12/11

N2 - By analyzing (27.12±0.14)×108 ψ(3686) events collected with the BESIII detector operating at the BEPCII collider, the decays χcJ→pp¯KS0K-π++c.c. (J=0,1,2) are observed for the first time with statistical significances greater than 10σ. The branching fractions of these decays are determined to be B(χc0→pp¯KS0K-π++c.c.)=(2.61±0.27±0.32)×10-5, B(χc1→pp¯KS0K-π++c.c.)=(4.16±0.24±0.46)×10-5, and B(χc2→pp¯KS0K-π++c.c.)=(5.63±0.28±0.46)×10-5, respectively. The processes χc1,2→p¯Λ(1520)KS0π++c.c. are also observed, with statistical significances of 5.7σ and 7.0σ, respectively. Evidence for χc0→p¯Λ(1520)KS0π++c.c. is found with statistical significances of 3.3σ. The corresponding branching fractions are determined to be B(χc0→p¯Λ(1520)KS0π++c.c.)=(1.61-0.64+0.68±0.23)×10-5, B(χc1→p¯Λ(1520)KS0π++c.c.)=(4.06-0.76+0.80±0.52)×10-5, and B(χc2→p¯Λ(1520)KS0π++c.c.)=(4.09-0.84+0.87±0.42)×10-5. Here, the first uncertainties are statistical and the second ones are systematic.

AB - By analyzing (27.12±0.14)×108 ψ(3686) events collected with the BESIII detector operating at the BEPCII collider, the decays χcJ→pp¯KS0K-π++c.c. (J=0,1,2) are observed for the first time with statistical significances greater than 10σ. The branching fractions of these decays are determined to be B(χc0→pp¯KS0K-π++c.c.)=(2.61±0.27±0.32)×10-5, B(χc1→pp¯KS0K-π++c.c.)=(4.16±0.24±0.46)×10-5, and B(χc2→pp¯KS0K-π++c.c.)=(5.63±0.28±0.46)×10-5, respectively. The processes χc1,2→p¯Λ(1520)KS0π++c.c. are also observed, with statistical significances of 5.7σ and 7.0σ, respectively. Evidence for χc0→p¯Λ(1520)KS0π++c.c. is found with statistical significances of 3.3σ. The corresponding branching fractions are determined to be B(χc0→p¯Λ(1520)KS0π++c.c.)=(1.61-0.64+0.68±0.23)×10-5, B(χc1→p¯Λ(1520)KS0π++c.c.)=(4.06-0.76+0.80±0.52)×10-5, and B(χc2→p¯Λ(1520)KS0π++c.c.)=(4.09-0.84+0.87±0.42)×10-5. Here, the first uncertainties are statistical and the second ones are systematic.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85212701735&origin=inward&txGid=f38b80f5cae0cc7db5fca5ce78f553e7

U2 - 10.1103/PhysRevD.110.L111101

DO - 10.1103/PhysRevD.110.L111101

M3 - Article

VL - 110

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 11

M1 - 112009

ER -

ID: 62701975